ginac/fail.cpp

   1 /** @file fail.cpp
   2  *
   3  *  Implementation of class signaling failure of operation. Considered
   4  *  obsolete all this stuff ought to be replaced by exceptions. */
   5
   6 #include "ginac.h"
   7
   8 //////////
   9 // default constructor, destructor, copy constructor assignment operator and helpers
  10 //////////
  11
  12 // public
  13
  14 fail::fail() : basic(TINFO_FAIL)
  15 {
  16     debugmsg("fail default constructor",LOGLEVEL_CONSTRUCT);
  17 }
  18
  19 fail::~fail()
  20 {
  21     debugmsg("fail destructor",LOGLEVEL_DESTRUCT);
  22     destroy(0);
  23 }
  24
  25 fail::fail(fail const & other)
  26 {
  27     debugmsg("fail copy constructor",LOGLEVEL_CONSTRUCT);
  28     copy(other);
  29 }
  30
  31 fail const & fail::operator=(fail const & other)
  32 {
  33     debugmsg("fail operator=",LOGLEVEL_ASSIGNMENT);
  34     if (this != &other) {
  35         destroy(1);
  36         copy(other);
  37     }
  38     return *this;
  39 }
  40
  41 // protected
  42
  43 void fail::copy(fail const & other)
  44 {
  45     basic::copy(other);
  46 }
  47
  48 void fail::destroy(bool call_parent)
  49 {
  50     if (call_parent) basic::destroy(call_parent);
  51 }
  52
  53
  54 //////////
  55 // other constructors
  56 //////////
  57
  58 // none
  59
  60 //////////
  61 // functions overriding virtual functions from bases classes
  62 //////////
  63
  64 // public
  65
  66 basic * fail::duplicate() const
  67 {
  68     debugmsg("fail duplicate",LOGLEVEL_DUPLICATE);
  69     return new fail(*this);
  70 }
  71
  72 // protected
  73
  74 int fail::compare_same_type(basic const & other) const
  75 {
  76         // two fails are always identical
  77     return 0;
  78 }
  79
  80 //////////
  81 // new virtual functions which can be overridden by derived classes
  82 //////////
  83
  84 // none
  85
  86 //////////
  87 // non-virtual functions in this class
  88 //////////
  89
  90 // none
  91
  92 //////////
  93 // static member variables
  94 //////////
  95
  96 // none
  97
  98 //////////
  99 // global constants
 100 //////////
 101
 102 const fail some_fail;
 103 type_info const & typeid_fail=typeid(some_fail);
 104